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Echinodorus tenellus (Mart. ex Schult. f.) Buchenau
Alisma tenellum; Little burrhead; Dwarf burrhead

Life   Plantae   Monocotyledoneae   Alismataceae   Echinodorus

Echinodorus tenellus, plant
© George Yatskievych, 2003 · 1
Echinodorus tenellus, plant

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Echinodorus tenellus habitat
© Kay Yatskievych, 2003 · 1
Echinodorus tenellus habitat

Associates · map
FamilyScientific name @ source (records)
Botryosphaeriaceae  Phyllosticta @ 350210A (1); 350210B (1)
Mycosphaerellaceae  Cercospora @ BPI (1); 431944B (1); 431944A (1)

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Echinodorus tenellus (Mart. ex Schult. f.) Buchenau

Image of Echinodorus tenellus

General Information
Symbol: ECTE2
Group: Monocot
Family: Alismataceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   N
PR   N
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


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Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 95. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .



Symbol Scientific Name
ECPA6 Echinodorus parvulus Engelm.
ECTEL Echinodorus tenellus (Mart. ex Schult. f.) Buchenau var. latifolius (Seub.) Fassett
ECTEP Echinodorus tenellus (Mart. ex Schult. f.) Buchenau var. parvulus (Engelm.) Fassett
HETE Helanthium tenellum (Mart. ex Roem. & Schult.) Britton
HEPA21 Helianthium parvulum (Engelm.) Britton
HETE13 Helianthium tenellum (Mart. ex Schult. f.) Britton


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Alismatidae
Order Alismatales
Family Alismataceae – Water-plantain family
Genus Echinodorus Rich. ex Engelm. – burhead
Species Echinodorus tenellus (Mart. ex Schult. f.) Buchenau – mudbabies

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Connecticut Echinodorus tenellus var. parvulus
bur-head Endangered
Illinois small burhead Endangered
Indiana Echinodorus parvulus
little bur-head Endangered
Kentucky Echinodorus parvulus
dwarf burhead Endangered
Michigan dwarf burhead Endangered

Wetland Status

Interpreting Wetland Status


HETE   Helanthium tenellum (Mart. ex Roem. & Schult.) Britton

North America
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont OBL
Great Plains OBL
Midwest OBL
Northcentral & Northeast OBL

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (ECTE2)
Flora of North America (ECTE2)
Integrated Taxonomic Information System (ECPA6)
Integrated Taxonomic Information System (ECTE2)
Integrated Taxonomic Information System (ECTEL)
Integrated Taxonomic Information System (ECTEP)
Integrated Taxonomic Information System (HEPA21)
Integrated Taxonomic Information System (HETE13)
The Center for Plant Conservation (ECTE2)
USF Atlas of Florida Vascular Plants (ECTE2)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 22 | Alismataceae | Echinodorus

1. Echinodorus tenellus (Martius) Buchenau, Index Crit. Butom. Alism. Juncagin. 21. 1868.

Alisma tenellum Martius in J. J. Roemer and J. A. Schultes, Syst. Veg. 7(2): 1600. 1830; Echinodorus parvulus Engelmann; E. tenellus var. parvulus (Engelmann) Fassett; Helianthium parvulum (Engelmann) Small

Herbs, annual, relatively slender, to 25 cm; rhizomes absent. Leaves: submersed leaves mostly present, sessile; emersed leaves with petioles 4--5-ridged, 1.2--9.5 cm; blade with translucent markings absent, linear, 1--7.4 × 0.2--0.5 cm, base attenuate; if emersed, narrowly lanceolate to ovate. Inflorescences umbels, rarely racemes, of 1--2 whorls, each 4--6-flowered, erect, to 6 ´ 8 cm, not proliferating; peduncles terete, 1.2--4 cm; rachis absent or if present, terete; bracts connate ca. ½ length, deltate, 2.8--4.9 mm, coarse, margins delicate; pedicels spreading, 0.5--3 cm. Flowers 6--8 mm wide; sepals slightly appressed, 3--5-veined, veins not papillate; petals clawed; stamens 9; anthers basifixed; pistils 15--20. Fruits obovate, flattened, 0--3-ribbed, not abaxially keeled, 0.8--1.5 ´ 0.8--1 mm, glands absent; beak lateral, 0.1--0.2 mm. Chromosome number unknown.

Flowering summer--fall. Sandy soil along margins of small streams or lakes; 0--1500 m; Ala., Conn., Fla., Ga., Ill., Kans., Mass., Mich., N.Y., S.C., Tex., Vt.; se Mexico; West Indies; Central America (Guatemala, Nicaragua); South America.

Echinodorus tenellus has often been separated into two species, one in North America and the other in the tropics. Whenever Echinodorus is studied throughout the range, differences between the two species break down, and a continuum exists from one species to the next. We recognize that overlap; therefore we are combining E. parvulus with E. tenellus.

Updated: 2019-11-15 12:52:00 gmt
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